If the DNA of a new discovered organism exhibits genes that are arranged as operons and lacks intron sequences, the hypothesis that this organism is bacterial rather than mammalian would be supported by the evidence.
Answer the following statement true (T) or false (F)
True
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Chitons, snails, clams and squid all belong to this phylum:
a. Mollusca. b. Gastropoda. c. Bivalvia. d. Platyhelminthes. e. Cephalopoda.
What is the name of the process by which mitochondria and chloroplasts probably evolved?
a. endocytosis b. endosymbiosis c. exocytosis d. exosymbiosis
_________ speciation results when a population of a species is geographically isolated.
Fill in the blank(s) with the appropriate word(s).
Driver mutations provide a growth advantage to a tumor cell. Which type of mutation is known to accumulate in cancer cells but has no direct contribution to the cancer phenotype?
A) insignificant mutations B) carrier mutations C) indirect mutations D) alteration mutations E) passenger mutations